Syntax Definition cif 3520

Description: Extend class notation to include the conditional operator. See df-if 3521 for a description. (In older databases this was denoted "ded".)

Hypotheses

Ref	Expression
wph	wff ph
cA	class A
cB	class B

Assertion

Ref	Expression
cif	class if ( ph , A , B )

See definition df-if 3521 for more information.